2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
9 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/jiffies.h>
30 #include <linux/i2c.h>
31 #include <linux/i2c-sensor.h>
32 #include <linux/i2c-vid.h>
33 #include <linux/hwmon.h>
34 #include <linux/err.h>
36 /* Addresses to scan */
37 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
38 static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
40 /* Insmod parameters */
41 SENSORS_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102);
43 /* The LM85 registers */
45 #define LM85_REG_IN(nr) (0x20 + (nr))
46 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
47 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
49 #define LM85_REG_TEMP(nr) (0x25 + (nr))
50 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
51 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
53 /* Fan speeds are LSB, MSB (2 bytes) */
54 #define LM85_REG_FAN(nr) (0x28 + (nr) *2)
55 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2)
57 #define LM85_REG_PWM(nr) (0x30 + (nr))
59 #define ADT7463_REG_OPPOINT(nr) (0x33 + (nr))
61 #define ADT7463_REG_TMIN_CTL1 0x36
62 #define ADT7463_REG_TMIN_CTL2 0x37
64 #define LM85_REG_DEVICE 0x3d
65 #define LM85_REG_COMPANY 0x3e
66 #define LM85_REG_VERSTEP 0x3f
67 /* These are the recognized values for the above regs */
68 #define LM85_DEVICE_ADX 0x27
69 #define LM85_COMPANY_NATIONAL 0x01
70 #define LM85_COMPANY_ANALOG_DEV 0x41
71 #define LM85_COMPANY_SMSC 0x5c
72 #define LM85_VERSTEP_VMASK 0xf0
73 #define LM85_VERSTEP_GENERIC 0x60
74 #define LM85_VERSTEP_LM85C 0x60
75 #define LM85_VERSTEP_LM85B 0x62
76 #define LM85_VERSTEP_ADM1027 0x60
77 #define LM85_VERSTEP_ADT7463 0x62
78 #define LM85_VERSTEP_ADT7463C 0x6A
79 #define LM85_VERSTEP_EMC6D100_A0 0x60
80 #define LM85_VERSTEP_EMC6D100_A1 0x61
81 #define LM85_VERSTEP_EMC6D102 0x65
83 #define LM85_REG_CONFIG 0x40
85 #define LM85_REG_ALARM1 0x41
86 #define LM85_REG_ALARM2 0x42
88 #define LM85_REG_VID 0x43
90 /* Automated FAN control */
91 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
92 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
93 #define LM85_REG_AFAN_SPIKE1 0x62
94 #define LM85_REG_AFAN_SPIKE2 0x63
95 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
96 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
97 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
98 #define LM85_REG_AFAN_HYST1 0x6d
99 #define LM85_REG_AFAN_HYST2 0x6e
101 #define LM85_REG_TACH_MODE 0x74
102 #define LM85_REG_SPINUP_CTL 0x75
104 #define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr))
105 #define ADM1027_REG_CONFIG2 0x73
106 #define ADM1027_REG_INTMASK1 0x74
107 #define ADM1027_REG_INTMASK2 0x75
108 #define ADM1027_REG_EXTEND_ADC1 0x76
109 #define ADM1027_REG_EXTEND_ADC2 0x77
110 #define ADM1027_REG_CONFIG3 0x78
111 #define ADM1027_REG_FAN_PPR 0x7b
113 #define ADT7463_REG_THERM 0x79
114 #define ADT7463_REG_THERM_LIMIT 0x7A
116 #define EMC6D100_REG_ALARM3 0x7d
117 /* IN5, IN6 and IN7 */
118 #define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5))
119 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2)
120 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2)
121 #define EMC6D102_REG_EXTEND_ADC1 0x85
122 #define EMC6D102_REG_EXTEND_ADC2 0x86
123 #define EMC6D102_REG_EXTEND_ADC3 0x87
124 #define EMC6D102_REG_EXTEND_ADC4 0x88
126 #define LM85_ALARM_IN0 0x0001
127 #define LM85_ALARM_IN1 0x0002
128 #define LM85_ALARM_IN2 0x0004
129 #define LM85_ALARM_IN3 0x0008
130 #define LM85_ALARM_TEMP1 0x0010
131 #define LM85_ALARM_TEMP2 0x0020
132 #define LM85_ALARM_TEMP3 0x0040
133 #define LM85_ALARM_ALARM2 0x0080
134 #define LM85_ALARM_IN4 0x0100
135 #define LM85_ALARM_RESERVED 0x0200
136 #define LM85_ALARM_FAN1 0x0400
137 #define LM85_ALARM_FAN2 0x0800
138 #define LM85_ALARM_FAN3 0x1000
139 #define LM85_ALARM_FAN4 0x2000
140 #define LM85_ALARM_TEMP1_FAULT 0x4000
141 #define LM85_ALARM_TEMP3_FAULT 0x8000
144 /* Conversions. Rounding and limit checking is only done on the TO_REG
145 variants. Note that you should be a bit careful with which arguments
146 these macros are called: arguments may be evaluated more than once.
149 /* IN are scaled acording to built-in resistors */
150 static int lm85_scaling[] = { /* .001 Volts */
151 2500, 2250, 3300, 5000, 12000,
152 3300, 1500, 1800 /*EMC6D100*/
154 #define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from))
156 #define INS_TO_REG(n,val) \
157 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255)
159 #define INSEXT_FROM_REG(n,val,ext,scale) \
160 SCALE((val)*(scale) + (ext),192*(scale),lm85_scaling[n])
162 #define INS_FROM_REG(n,val) INSEXT_FROM_REG(n,val,0,1)
164 /* FAN speed is measured using 90kHz clock */
165 #define FAN_TO_REG(val) (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534))
166 #define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val))
168 /* Temperature is reported in .001 degC increments */
169 #define TEMP_TO_REG(val) \
170 SENSORS_LIMIT(SCALE(val,1000,1),-127,127)
171 #define TEMPEXT_FROM_REG(val,ext,scale) \
172 SCALE((val)*scale + (ext),scale,1000)
173 #define TEMP_FROM_REG(val) \
174 TEMPEXT_FROM_REG(val,0,1)
176 #define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255))
177 #define PWM_FROM_REG(val) (val)
180 /* ZONEs have the following parameters:
181 * Limit (low) temp, 1. degC
182 * Hysteresis (below limit), 1. degC (0-15)
183 * Range of speed control, .1 degC (2-80)
184 * Critical (high) temp, 1. degC
186 * FAN PWMs have the following parameters:
187 * Reference Zone, 1, 2, 3, etc.
188 * Spinup time, .05 sec
189 * PWM value at limit/low temp, 1 count
190 * PWM Frequency, 1. Hz
191 * PWM is Min or OFF below limit, flag
192 * Invert PWM output, flag
194 * Some chips filter the temp, others the fan.
195 * Filter constant (or disabled) .1 seconds
198 /* These are the zone temperature range encodings in .001 degree C */
199 static int lm85_range_map[] = {
200 2000, 2500, 3300, 4000, 5000, 6600,
201 8000, 10000, 13300, 16000, 20000, 26600,
202 32000, 40000, 53300, 80000
204 static int RANGE_TO_REG( int range )
208 if ( range < lm85_range_map[0] ) {
210 } else if ( range > lm85_range_map[15] ) {
212 } else { /* find closest match */
213 for ( i = 14 ; i >= 0 ; --i ) {
214 if ( range > lm85_range_map[i] ) { /* range bracketed */
215 if ((lm85_range_map[i+1] - range) <
216 (range - lm85_range_map[i])) {
226 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f])
228 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
229 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
230 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
231 * is ignored, or set to 0.
233 /* These are the PWM frequency encodings */
234 static int lm85_freq_map[] = { /* .1 Hz */
235 100, 150, 230, 300, 380, 470, 620, 940
237 static int FREQ_TO_REG( int freq )
241 if( freq >= lm85_freq_map[7] ) { return 7 ; }
242 for( i = 0 ; i < 7 ; ++i )
243 if( freq <= lm85_freq_map[i] )
247 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07])
249 /* Since we can't use strings, I'm abusing these numbers
250 * to stand in for the following meanings:
251 * 1 -- PWM responds to Zone 1
252 * 2 -- PWM responds to Zone 2
253 * 3 -- PWM responds to Zone 3
254 * 23 -- PWM responds to the higher temp of Zone 2 or 3
255 * 123 -- PWM responds to highest of Zone 1, 2, or 3
256 * 0 -- PWM is always at 0% (ie, off)
257 * -1 -- PWM is always at 100%
258 * -2 -- PWM responds to manual control
261 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
262 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07])
264 static int ZONE_TO_REG( int zone )
268 for( i = 0 ; i <= 7 ; ++i )
269 if( zone == lm85_zone_map[i] )
271 if( i > 7 ) /* Not found. */
272 i = 3; /* Always 100% */
273 return( (i & 0x07)<<5 );
276 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15))
277 #define HYST_FROM_REG(val) ((val)*1000)
279 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127))
280 #define OFFSET_FROM_REG(val) ((val)*25)
282 #define PPR_MASK(fan) (0x03<<(fan *2))
283 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2))
284 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1)
286 /* i2c-vid.h defines vid_from_reg() */
287 #define VID_FROM_REG(val,vrm) (vid_from_reg((val),(vrm)))
289 /* Unlike some other drivers we DO NOT set initial limits. Use
290 * the config file to set limits. Some users have reported
291 * motherboards shutting down when we set limits in a previous
292 * version of the driver.
295 /* Chip sampling rates
297 * Some sensors are not updated more frequently than once per second
298 * so it doesn't make sense to read them more often than that.
299 * We cache the results and return the saved data if the driver
300 * is called again before a second has elapsed.
302 * Also, there is significant configuration data for this chip
303 * given the automatic PWM fan control that is possible. There
304 * are about 47 bytes of config data to only 22 bytes of actual
305 * readings. So, we keep the config data up to date in the cache
306 * when it is written and only sample it once every 1 *minute*
308 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
309 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
311 /* For each registered LM85, we need to keep some data in memory. That
312 data is pointed to by lm85_list[NR]->data. The structure itself is
313 dynamically allocated, at the same time when a new lm85 client is
316 /* LM85 can automatically adjust fan speeds based on temperature
317 * This structure encapsulates an entire Zone config. There are
318 * three zones (one for each temperature input) on the lm85
321 s8 limit; /* Low temp limit */
322 u8 hyst; /* Low limit hysteresis. (0-15) */
323 u8 range; /* Temp range, encoded */
324 s8 critical; /* "All fans ON" temp limit */
325 u8 off_desired; /* Actual "off" temperature specified. Preserved
326 * to prevent "drift" as other autofan control
329 u8 max_desired; /* Actual "max" temperature specified. Preserved
330 * to prevent "drift" as other autofan control
335 struct lm85_autofan {
336 u8 config; /* Register value */
337 u8 freq; /* PWM frequency, encoded */
338 u8 min_pwm; /* Minimum PWM value, encoded */
339 u8 min_off; /* Min PWM or OFF below "limit", flag */
343 struct i2c_client client;
344 struct class_device *class_dev;
345 struct semaphore lock;
348 struct semaphore update_lock;
349 int valid; /* !=0 if following fields are valid */
350 unsigned long last_reading; /* In jiffies */
351 unsigned long last_config; /* In jiffies */
353 u8 in[8]; /* Register value */
354 u8 in_max[8]; /* Register value */
355 u8 in_min[8]; /* Register value */
356 s8 temp[3]; /* Register value */
357 s8 temp_min[3]; /* Register value */
358 s8 temp_max[3]; /* Register value */
359 s8 temp_offset[3]; /* Register value */
360 u16 fan[4]; /* Register value */
361 u16 fan_min[4]; /* Register value */
362 u8 pwm[3]; /* Register value */
363 u8 spinup_ctl; /* Register encoding, combined */
364 u8 tach_mode; /* Register encoding, combined */
365 u8 temp_ext[3]; /* Decoded values */
366 u8 in_ext[8]; /* Decoded values */
367 u8 adc_scale; /* ADC Extended bits scaling factor */
368 u8 fan_ppr; /* Register value */
369 u8 smooth[3]; /* Register encoding */
370 u8 vid; /* Register value */
371 u8 vrm; /* VRM version */
372 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */
373 u8 oppoint[3]; /* Register value */
374 u16 tmin_ctl; /* Register value */
375 unsigned long therm_total; /* Cummulative therm count */
376 u8 therm_limit; /* Register value */
377 u32 alarms; /* Register encoding, combined */
378 struct lm85_autofan autofan[3];
379 struct lm85_zone zone[3];
382 static int lm85_attach_adapter(struct i2c_adapter *adapter);
383 static int lm85_detect(struct i2c_adapter *adapter, int address,
385 static int lm85_detach_client(struct i2c_client *client);
387 static int lm85_read_value(struct i2c_client *client, u8 register);
388 static int lm85_write_value(struct i2c_client *client, u8 register, int value);
389 static struct lm85_data *lm85_update_device(struct device *dev);
390 static void lm85_init_client(struct i2c_client *client);
393 static struct i2c_driver lm85_driver = {
394 .owner = THIS_MODULE,
396 .id = I2C_DRIVERID_LM85,
397 .flags = I2C_DF_NOTIFY,
398 .attach_adapter = lm85_attach_adapter,
399 .detach_client = lm85_detach_client,
404 static ssize_t show_fan(struct device *dev, char *buf, int nr)
406 struct lm85_data *data = lm85_update_device(dev);
407 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
409 static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
411 struct lm85_data *data = lm85_update_device(dev);
412 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
414 static ssize_t set_fan_min(struct device *dev, const char *buf,
415 size_t count, int nr)
417 struct i2c_client *client = to_i2c_client(dev);
418 struct lm85_data *data = i2c_get_clientdata(client);
419 long val = simple_strtol(buf, NULL, 10);
421 down(&data->update_lock);
422 data->fan_min[nr] = FAN_TO_REG(val);
423 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
424 up(&data->update_lock);
428 #define show_fan_offset(offset) \
429 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
431 return show_fan(dev, buf, offset - 1); \
433 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
435 return show_fan_min(dev, buf, offset - 1); \
437 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
438 const char *buf, size_t count) \
440 return set_fan_min(dev, buf, count, offset - 1); \
442 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \
444 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
445 show_fan_##offset##_min, set_fan_##offset##_min);
452 /* vid, vrm, alarms */
454 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
456 struct lm85_data *data = lm85_update_device(dev);
457 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
460 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
462 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
464 struct lm85_data *data = lm85_update_device(dev);
465 return sprintf(buf, "%ld\n", (long) data->vrm);
468 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
470 struct i2c_client *client = to_i2c_client(dev);
471 struct lm85_data *data = i2c_get_clientdata(client);
474 val = simple_strtoul(buf, NULL, 10);
479 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
481 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
483 struct lm85_data *data = lm85_update_device(dev);
484 return sprintf(buf, "%u\n", data->alarms);
487 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
491 static ssize_t show_pwm(struct device *dev, char *buf, int nr)
493 struct lm85_data *data = lm85_update_device(dev);
494 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
496 static ssize_t set_pwm(struct device *dev, const char *buf,
497 size_t count, int nr)
499 struct i2c_client *client = to_i2c_client(dev);
500 struct lm85_data *data = i2c_get_clientdata(client);
501 long val = simple_strtol(buf, NULL, 10);
503 down(&data->update_lock);
504 data->pwm[nr] = PWM_TO_REG(val);
505 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
506 up(&data->update_lock);
509 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
511 struct lm85_data *data = lm85_update_device(dev);
514 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
515 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
518 #define show_pwm_reg(offset) \
519 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
521 return show_pwm(dev, buf, offset - 1); \
523 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \
524 const char *buf, size_t count) \
526 return set_pwm(dev, buf, count, offset - 1); \
528 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \
530 return show_pwm_enable(dev, buf, offset - 1); \
532 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
533 show_pwm_##offset, set_pwm_##offset); \
534 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \
535 show_pwm_enable##offset, NULL);
543 static ssize_t show_in(struct device *dev, char *buf, int nr)
545 struct lm85_data *data = lm85_update_device(dev);
546 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
551 static ssize_t show_in_min(struct device *dev, char *buf, int nr)
553 struct lm85_data *data = lm85_update_device(dev);
554 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
556 static ssize_t set_in_min(struct device *dev, const char *buf,
557 size_t count, int nr)
559 struct i2c_client *client = to_i2c_client(dev);
560 struct lm85_data *data = i2c_get_clientdata(client);
561 long val = simple_strtol(buf, NULL, 10);
563 down(&data->update_lock);
564 data->in_min[nr] = INS_TO_REG(nr, val);
565 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
566 up(&data->update_lock);
569 static ssize_t show_in_max(struct device *dev, char *buf, int nr)
571 struct lm85_data *data = lm85_update_device(dev);
572 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
574 static ssize_t set_in_max(struct device *dev, const char *buf,
575 size_t count, int nr)
577 struct i2c_client *client = to_i2c_client(dev);
578 struct lm85_data *data = i2c_get_clientdata(client);
579 long val = simple_strtol(buf, NULL, 10);
581 down(&data->update_lock);
582 data->in_max[nr] = INS_TO_REG(nr, val);
583 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
584 up(&data->update_lock);
587 #define show_in_reg(offset) \
588 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
590 return show_in(dev, buf, offset); \
592 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
594 return show_in_min(dev, buf, offset); \
596 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
598 return show_in_max(dev, buf, offset); \
600 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \
601 const char *buf, size_t count) \
603 return set_in_min(dev, buf, count, offset); \
605 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \
606 const char *buf, size_t count) \
608 return set_in_max(dev, buf, count, offset); \
610 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \
612 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
613 show_in_##offset##_min, set_in_##offset##_min); \
614 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
615 show_in_##offset##_max, set_in_##offset##_max);
625 static ssize_t show_temp(struct device *dev, char *buf, int nr)
627 struct lm85_data *data = lm85_update_device(dev);
628 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
632 static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
634 struct lm85_data *data = lm85_update_device(dev);
635 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
637 static ssize_t set_temp_min(struct device *dev, const char *buf,
638 size_t count, int nr)
640 struct i2c_client *client = to_i2c_client(dev);
641 struct lm85_data *data = i2c_get_clientdata(client);
642 long val = simple_strtol(buf, NULL, 10);
644 down(&data->update_lock);
645 data->temp_min[nr] = TEMP_TO_REG(val);
646 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
647 up(&data->update_lock);
650 static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
652 struct lm85_data *data = lm85_update_device(dev);
653 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
655 static ssize_t set_temp_max(struct device *dev, const char *buf,
656 size_t count, int nr)
658 struct i2c_client *client = to_i2c_client(dev);
659 struct lm85_data *data = i2c_get_clientdata(client);
660 long val = simple_strtol(buf, NULL, 10);
662 down(&data->update_lock);
663 data->temp_max[nr] = TEMP_TO_REG(val);
664 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
665 up(&data->update_lock);
668 #define show_temp_reg(offset) \
669 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
671 return show_temp(dev, buf, offset - 1); \
673 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
675 return show_temp_min(dev, buf, offset - 1); \
677 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
679 return show_temp_max(dev, buf, offset - 1); \
681 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
682 const char *buf, size_t count) \
684 return set_temp_min(dev, buf, count, offset - 1); \
686 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
687 const char *buf, size_t count) \
689 return set_temp_max(dev, buf, count, offset - 1); \
691 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \
693 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
694 show_temp_##offset##_min, set_temp_##offset##_min); \
695 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
696 show_temp_##offset##_max, set_temp_##offset##_max);
703 /* Automatic PWM control */
705 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr)
707 struct lm85_data *data = lm85_update_device(dev);
708 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
710 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf,
711 size_t count, int nr)
713 struct i2c_client *client = to_i2c_client(dev);
714 struct lm85_data *data = i2c_get_clientdata(client);
715 long val = simple_strtol(buf, NULL, 10);
717 down(&data->update_lock);
718 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
720 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
721 data->autofan[nr].config);
722 up(&data->update_lock);
725 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr)
727 struct lm85_data *data = lm85_update_device(dev);
728 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
730 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf,
731 size_t count, int nr)
733 struct i2c_client *client = to_i2c_client(dev);
734 struct lm85_data *data = i2c_get_clientdata(client);
735 long val = simple_strtol(buf, NULL, 10);
737 down(&data->update_lock);
738 data->autofan[nr].min_pwm = PWM_TO_REG(val);
739 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
740 data->autofan[nr].min_pwm);
741 up(&data->update_lock);
744 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr)
746 struct lm85_data *data = lm85_update_device(dev);
747 return sprintf(buf,"%d\n", data->autofan[nr].min_off);
749 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf,
750 size_t count, int nr)
752 struct i2c_client *client = to_i2c_client(dev);
753 struct lm85_data *data = i2c_get_clientdata(client);
754 long val = simple_strtol(buf, NULL, 10);
756 down(&data->update_lock);
757 data->autofan[nr].min_off = val;
758 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
760 | (data->autofan[0].min_off ? 0x20 : 0)
761 | (data->autofan[1].min_off ? 0x40 : 0)
762 | (data->autofan[2].min_off ? 0x80 : 0)
764 up(&data->update_lock);
767 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr)
769 struct lm85_data *data = lm85_update_device(dev);
770 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
772 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf,
773 size_t count, int nr)
775 struct i2c_client *client = to_i2c_client(dev);
776 struct lm85_data *data = i2c_get_clientdata(client);
777 long val = simple_strtol(buf, NULL, 10);
779 down(&data->update_lock);
780 data->autofan[nr].freq = FREQ_TO_REG(val);
781 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
782 (data->zone[nr].range << 4)
783 | data->autofan[nr].freq
785 up(&data->update_lock);
788 #define pwm_auto(offset) \
789 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
792 return show_pwm_auto_channels(dev, buf, offset - 1); \
794 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \
795 const char *buf, size_t count) \
797 return set_pwm_auto_channels(dev, buf, count, offset - 1); \
799 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
802 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \
804 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \
805 const char *buf, size_t count) \
807 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \
809 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
812 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \
814 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \
815 const char *buf, size_t count) \
817 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \
819 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \
822 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \
824 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \
825 const char *buf, size_t count) \
827 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \
829 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \
830 show_pwm##offset##_auto_channels, \
831 set_pwm##offset##_auto_channels); \
832 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \
833 show_pwm##offset##_auto_pwm_min, \
834 set_pwm##offset##_auto_pwm_min); \
835 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \
836 show_pwm##offset##_auto_pwm_minctl, \
837 set_pwm##offset##_auto_pwm_minctl); \
838 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \
839 show_pwm##offset##_auto_pwm_freq, \
840 set_pwm##offset##_auto_pwm_freq);
845 /* Temperature settings for automatic PWM control */
847 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr)
849 struct lm85_data *data = lm85_update_device(dev);
850 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
851 HYST_FROM_REG(data->zone[nr].hyst));
853 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf,
854 size_t count, int nr)
856 struct i2c_client *client = to_i2c_client(dev);
857 struct lm85_data *data = i2c_get_clientdata(client);
859 long val = simple_strtol(buf, NULL, 10);
861 down(&data->update_lock);
862 min = TEMP_FROM_REG(data->zone[nr].limit);
863 data->zone[nr].off_desired = TEMP_TO_REG(val);
864 data->zone[nr].hyst = HYST_TO_REG(min - val);
865 if ( nr == 0 || nr == 1 ) {
866 lm85_write_value(client, LM85_REG_AFAN_HYST1,
867 (data->zone[0].hyst << 4)
871 lm85_write_value(client, LM85_REG_AFAN_HYST2,
872 (data->zone[2].hyst << 4)
875 up(&data->update_lock);
878 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr)
880 struct lm85_data *data = lm85_update_device(dev);
881 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
883 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf,
884 size_t count, int nr)
886 struct i2c_client *client = to_i2c_client(dev);
887 struct lm85_data *data = i2c_get_clientdata(client);
888 long val = simple_strtol(buf, NULL, 10);
890 down(&data->update_lock);
891 data->zone[nr].limit = TEMP_TO_REG(val);
892 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
893 data->zone[nr].limit);
895 /* Update temp_auto_max and temp_auto_range */
896 data->zone[nr].range = RANGE_TO_REG(
897 TEMP_FROM_REG(data->zone[nr].max_desired) -
898 TEMP_FROM_REG(data->zone[nr].limit));
899 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
900 ((data->zone[nr].range & 0x0f) << 4)
901 | (data->autofan[nr].freq & 0x07));
903 /* Update temp_auto_hyst and temp_auto_off */
904 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
905 data->zone[nr].limit) - TEMP_FROM_REG(
906 data->zone[nr].off_desired));
907 if ( nr == 0 || nr == 1 ) {
908 lm85_write_value(client, LM85_REG_AFAN_HYST1,
909 (data->zone[0].hyst << 4)
913 lm85_write_value(client, LM85_REG_AFAN_HYST2,
914 (data->zone[2].hyst << 4)
917 up(&data->update_lock);
920 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr)
922 struct lm85_data *data = lm85_update_device(dev);
923 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
924 RANGE_FROM_REG(data->zone[nr].range));
926 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf,
927 size_t count, int nr)
929 struct i2c_client *client = to_i2c_client(dev);
930 struct lm85_data *data = i2c_get_clientdata(client);
932 long val = simple_strtol(buf, NULL, 10);
934 down(&data->update_lock);
935 min = TEMP_FROM_REG(data->zone[nr].limit);
936 data->zone[nr].max_desired = TEMP_TO_REG(val);
937 data->zone[nr].range = RANGE_TO_REG(
939 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
940 ((data->zone[nr].range & 0x0f) << 4)
941 | (data->autofan[nr].freq & 0x07));
942 up(&data->update_lock);
945 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr)
947 struct lm85_data *data = lm85_update_device(dev);
948 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
950 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf,
951 size_t count, int nr)
953 struct i2c_client *client = to_i2c_client(dev);
954 struct lm85_data *data = i2c_get_clientdata(client);
955 long val = simple_strtol(buf, NULL, 10);
957 down(&data->update_lock);
958 data->zone[nr].critical = TEMP_TO_REG(val);
959 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
960 data->zone[nr].critical);
961 up(&data->update_lock);
964 #define temp_auto(offset) \
965 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
968 return show_temp_auto_temp_off(dev, buf, offset - 1); \
970 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \
971 const char *buf, size_t count) \
973 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \
975 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
978 return show_temp_auto_temp_min(dev, buf, offset - 1); \
980 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \
981 const char *buf, size_t count) \
983 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \
985 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
988 return show_temp_auto_temp_max(dev, buf, offset - 1); \
990 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \
991 const char *buf, size_t count) \
993 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \
995 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
998 return show_temp_auto_temp_crit(dev, buf, offset - 1); \
1000 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \
1001 const char *buf, size_t count) \
1003 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \
1005 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \
1006 show_temp##offset##_auto_temp_off, \
1007 set_temp##offset##_auto_temp_off); \
1008 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \
1009 show_temp##offset##_auto_temp_min, \
1010 set_temp##offset##_auto_temp_min); \
1011 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \
1012 show_temp##offset##_auto_temp_max, \
1013 set_temp##offset##_auto_temp_max); \
1014 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \
1015 show_temp##offset##_auto_temp_crit, \
1016 set_temp##offset##_auto_temp_crit);
1021 int lm85_attach_adapter(struct i2c_adapter *adapter)
1023 if (!(adapter->class & I2C_CLASS_HWMON))
1025 return i2c_detect(adapter, &addr_data, lm85_detect);
1028 int lm85_detect(struct i2c_adapter *adapter, int address,
1031 int company, verstep ;
1032 struct i2c_client *new_client = NULL;
1033 struct lm85_data *data;
1035 const char *type_name = "";
1037 if (i2c_is_isa_adapter(adapter)) {
1038 /* This chip has no ISA interface */
1042 if (!i2c_check_functionality(adapter,
1043 I2C_FUNC_SMBUS_BYTE_DATA)) {
1044 /* We need to be able to do byte I/O */
1048 /* OK. For now, we presume we have a valid client. We now create the
1049 client structure, even though we cannot fill it completely yet.
1050 But it allows us to access lm85_{read,write}_value. */
1052 if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1056 memset(data, 0, sizeof(struct lm85_data));
1058 new_client = &data->client;
1059 i2c_set_clientdata(new_client, data);
1060 new_client->addr = address;
1061 new_client->adapter = adapter;
1062 new_client->driver = &lm85_driver;
1063 new_client->flags = 0;
1065 /* Now, we do the remaining detection. */
1067 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1068 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1070 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1071 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1072 i2c_adapter_id(new_client->adapter), new_client->addr,
1075 /* If auto-detecting, Determine the chip type. */
1077 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1078 i2c_adapter_id(adapter), address );
1079 if( company == LM85_COMPANY_NATIONAL
1080 && verstep == LM85_VERSTEP_LM85C ) {
1082 } else if( company == LM85_COMPANY_NATIONAL
1083 && verstep == LM85_VERSTEP_LM85B ) {
1085 } else if( company == LM85_COMPANY_NATIONAL
1086 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1087 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1088 " Defaulting to LM85.\n", verstep);
1090 } else if( company == LM85_COMPANY_ANALOG_DEV
1091 && verstep == LM85_VERSTEP_ADM1027 ) {
1093 } else if( company == LM85_COMPANY_ANALOG_DEV
1094 && (verstep == LM85_VERSTEP_ADT7463
1095 || verstep == LM85_VERSTEP_ADT7463C) ) {
1097 } else if( company == LM85_COMPANY_ANALOG_DEV
1098 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1099 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1100 " Defaulting to Generic LM85.\n", verstep );
1102 } else if( company == LM85_COMPANY_SMSC
1103 && (verstep == LM85_VERSTEP_EMC6D100_A0
1104 || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1105 /* Unfortunately, we can't tell a '100 from a '101
1106 * from the registers. Since a '101 is a '100
1107 * in a package with fewer pins and therefore no
1108 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1109 * inputs read 0, then it's a '101.
1112 } else if( company == LM85_COMPANY_SMSC
1113 && verstep == LM85_VERSTEP_EMC6D102) {
1115 } else if( company == LM85_COMPANY_SMSC
1116 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1117 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1118 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1119 " Defaulting to Generic LM85.\n", verstep );
1121 } else if( kind == any_chip
1122 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1123 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1124 /* Leave kind as "any_chip" */
1126 dev_dbg(&adapter->dev, "Autodetection failed\n");
1127 /* Not an LM85 ... */
1128 if( kind == any_chip ) { /* User used force=x,y */
1129 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1130 " found at %d,0x%02x. Try force_lm85c.\n",
1131 i2c_adapter_id(adapter), address );
1138 /* Fill in the chip specific driver values */
1139 if ( kind == any_chip ) {
1141 } else if ( kind == lm85b ) {
1142 type_name = "lm85b";
1143 } else if ( kind == lm85c ) {
1144 type_name = "lm85c";
1145 } else if ( kind == adm1027 ) {
1146 type_name = "adm1027";
1147 } else if ( kind == adt7463 ) {
1148 type_name = "adt7463";
1149 } else if ( kind == emc6d100){
1150 type_name = "emc6d100";
1151 } else if ( kind == emc6d102 ) {
1152 type_name = "emc6d102";
1154 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1156 /* Fill in the remaining client fields */
1159 init_MUTEX(&data->update_lock);
1161 /* Tell the I2C layer a new client has arrived */
1162 if ((err = i2c_attach_client(new_client)))
1165 /* Set the VRM version */
1166 data->vrm = i2c_which_vrm();
1168 /* Initialize the LM85 chip */
1169 lm85_init_client(new_client);
1171 /* Register sysfs hooks */
1172 data->class_dev = hwmon_device_register(&new_client->dev);
1173 if (IS_ERR(data->class_dev)) {
1174 err = PTR_ERR(data->class_dev);
1178 device_create_file(&new_client->dev, &dev_attr_fan1_input);
1179 device_create_file(&new_client->dev, &dev_attr_fan2_input);
1180 device_create_file(&new_client->dev, &dev_attr_fan3_input);
1181 device_create_file(&new_client->dev, &dev_attr_fan4_input);
1182 device_create_file(&new_client->dev, &dev_attr_fan1_min);
1183 device_create_file(&new_client->dev, &dev_attr_fan2_min);
1184 device_create_file(&new_client->dev, &dev_attr_fan3_min);
1185 device_create_file(&new_client->dev, &dev_attr_fan4_min);
1186 device_create_file(&new_client->dev, &dev_attr_pwm1);
1187 device_create_file(&new_client->dev, &dev_attr_pwm2);
1188 device_create_file(&new_client->dev, &dev_attr_pwm3);
1189 device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
1190 device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
1191 device_create_file(&new_client->dev, &dev_attr_pwm3_enable);
1192 device_create_file(&new_client->dev, &dev_attr_in0_input);
1193 device_create_file(&new_client->dev, &dev_attr_in1_input);
1194 device_create_file(&new_client->dev, &dev_attr_in2_input);
1195 device_create_file(&new_client->dev, &dev_attr_in3_input);
1196 device_create_file(&new_client->dev, &dev_attr_in4_input);
1197 device_create_file(&new_client->dev, &dev_attr_in0_min);
1198 device_create_file(&new_client->dev, &dev_attr_in1_min);
1199 device_create_file(&new_client->dev, &dev_attr_in2_min);
1200 device_create_file(&new_client->dev, &dev_attr_in3_min);
1201 device_create_file(&new_client->dev, &dev_attr_in4_min);
1202 device_create_file(&new_client->dev, &dev_attr_in0_max);
1203 device_create_file(&new_client->dev, &dev_attr_in1_max);
1204 device_create_file(&new_client->dev, &dev_attr_in2_max);
1205 device_create_file(&new_client->dev, &dev_attr_in3_max);
1206 device_create_file(&new_client->dev, &dev_attr_in4_max);
1207 device_create_file(&new_client->dev, &dev_attr_temp1_input);
1208 device_create_file(&new_client->dev, &dev_attr_temp2_input);
1209 device_create_file(&new_client->dev, &dev_attr_temp3_input);
1210 device_create_file(&new_client->dev, &dev_attr_temp1_min);
1211 device_create_file(&new_client->dev, &dev_attr_temp2_min);
1212 device_create_file(&new_client->dev, &dev_attr_temp3_min);
1213 device_create_file(&new_client->dev, &dev_attr_temp1_max);
1214 device_create_file(&new_client->dev, &dev_attr_temp2_max);
1215 device_create_file(&new_client->dev, &dev_attr_temp3_max);
1216 device_create_file(&new_client->dev, &dev_attr_vrm);
1217 device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
1218 device_create_file(&new_client->dev, &dev_attr_alarms);
1219 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels);
1220 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels);
1221 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels);
1222 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min);
1223 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min);
1224 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min);
1225 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl);
1226 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl);
1227 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl);
1228 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq);
1229 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq);
1230 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq);
1231 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off);
1232 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off);
1233 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off);
1234 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min);
1235 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min);
1236 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min);
1237 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max);
1238 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max);
1239 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max);
1240 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit);
1241 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit);
1242 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit);
1246 /* Error out and cleanup code */
1248 i2c_detach_client(new_client);
1255 int lm85_detach_client(struct i2c_client *client)
1257 struct lm85_data *data = i2c_get_clientdata(client);
1258 hwmon_device_unregister(data->class_dev);
1259 i2c_detach_client(client);
1265 int lm85_read_value(struct i2c_client *client, u8 reg)
1269 /* What size location is it? */
1271 case LM85_REG_FAN(0) : /* Read WORD data */
1272 case LM85_REG_FAN(1) :
1273 case LM85_REG_FAN(2) :
1274 case LM85_REG_FAN(3) :
1275 case LM85_REG_FAN_MIN(0) :
1276 case LM85_REG_FAN_MIN(1) :
1277 case LM85_REG_FAN_MIN(2) :
1278 case LM85_REG_FAN_MIN(3) :
1279 case LM85_REG_ALARM1 : /* Read both bytes at once */
1280 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1281 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1283 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */
1284 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1285 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1287 default: /* Read BYTE data */
1288 res = i2c_smbus_read_byte_data(client, reg);
1295 int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1300 case LM85_REG_FAN(0) : /* Write WORD data */
1301 case LM85_REG_FAN(1) :
1302 case LM85_REG_FAN(2) :
1303 case LM85_REG_FAN(3) :
1304 case LM85_REG_FAN_MIN(0) :
1305 case LM85_REG_FAN_MIN(1) :
1306 case LM85_REG_FAN_MIN(2) :
1307 case LM85_REG_FAN_MIN(3) :
1308 /* NOTE: ALARM is read only, so not included here */
1309 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1310 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1312 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */
1313 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1314 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1316 default: /* Write BYTE data */
1317 res = i2c_smbus_write_byte_data(client, reg, value);
1324 void lm85_init_client(struct i2c_client *client)
1327 struct lm85_data *data = i2c_get_clientdata(client);
1329 dev_dbg(&client->dev, "Initializing device\n");
1331 /* Warn if part was not "READY" */
1332 value = lm85_read_value(client, LM85_REG_CONFIG);
1333 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1334 if( value & 0x02 ) {
1335 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1336 i2c_adapter_id(client->adapter), client->addr );
1338 if( ! (value & 0x04) ) {
1339 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1340 i2c_adapter_id(client->adapter), client->addr );
1343 && ( data->type == adm1027
1344 || data->type == adt7463 ) ) {
1345 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1346 "Please report this to the lm85 maintainer.\n",
1347 i2c_adapter_id(client->adapter), client->addr );
1350 /* WE INTENTIONALLY make no changes to the limits,
1351 * offsets, pwms, fans and zones. If they were
1352 * configured, we don't want to mess with them.
1353 * If they weren't, the default is 100% PWM, no
1354 * control and will suffice until 'sensors -s'
1355 * can be run by the user.
1358 /* Start monitoring */
1359 value = lm85_read_value(client, LM85_REG_CONFIG);
1360 /* Try to clear LOCK, Set START, save everything else */
1361 value = (value & ~ 0x02) | 0x01 ;
1362 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1363 lm85_write_value(client, LM85_REG_CONFIG, value);
1366 static struct lm85_data *lm85_update_device(struct device *dev)
1368 struct i2c_client *client = to_i2c_client(dev);
1369 struct lm85_data *data = i2c_get_clientdata(client);
1372 down(&data->update_lock);
1374 if ( !data->valid ||
1375 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1376 /* Things that change quickly */
1377 dev_dbg(&client->dev, "Reading sensor values\n");
1379 /* Have to read extended bits first to "freeze" the
1380 * more significant bits that are read later.
1382 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1383 int ext1 = lm85_read_value(client,
1384 ADM1027_REG_EXTEND_ADC1);
1385 int ext2 = lm85_read_value(client,
1386 ADM1027_REG_EXTEND_ADC2);
1387 int val = (ext1 << 8) + ext2;
1389 for(i = 0; i <= 4; i++)
1390 data->in_ext[i] = (val>>(i * 2))&0x03;
1392 for(i = 0; i <= 2; i++)
1393 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03;
1396 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in
1397 the emc6d102 and 2 in the adt7463 and adm1027. In all
1398 other chips ext is always 0 and the value of scale is
1399 irrelevant. So it is left in 4*/
1400 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4;
1402 for (i = 0; i <= 4; ++i) {
1404 lm85_read_value(client, LM85_REG_IN(i));
1407 for (i = 0; i <= 3; ++i) {
1409 lm85_read_value(client, LM85_REG_FAN(i));
1412 for (i = 0; i <= 2; ++i) {
1414 lm85_read_value(client, LM85_REG_TEMP(i));
1417 for (i = 0; i <= 2; ++i) {
1419 lm85_read_value(client, LM85_REG_PWM(i));
1422 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1424 if ( data->type == adt7463 ) {
1425 if( data->therm_total < ULONG_MAX - 256 ) {
1426 data->therm_total +=
1427 lm85_read_value(client, ADT7463_REG_THERM );
1429 } else if ( data->type == emc6d100 ) {
1430 /* Three more voltage sensors */
1431 for (i = 5; i <= 7; ++i) {
1433 lm85_read_value(client, EMC6D100_REG_IN(i));
1435 /* More alarm bits */
1437 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1438 } else if (data->type == emc6d102 ) {
1439 /* Have to read LSB bits after the MSB ones because
1440 the reading of the MSB bits has frozen the
1441 LSBs (backward from the ADM1027).
1443 int ext1 = lm85_read_value(client,
1444 EMC6D102_REG_EXTEND_ADC1);
1445 int ext2 = lm85_read_value(client,
1446 EMC6D102_REG_EXTEND_ADC2);
1447 int ext3 = lm85_read_value(client,
1448 EMC6D102_REG_EXTEND_ADC3);
1449 int ext4 = lm85_read_value(client,
1450 EMC6D102_REG_EXTEND_ADC4);
1451 data->in_ext[0] = ext3 & 0x0f;
1452 data->in_ext[1] = ext4 & 0x0f;
1453 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1454 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1455 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1457 data->temp_ext[0] = ext1 & 0x0f;
1458 data->temp_ext[1] = ext2 & 0x0f;
1459 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1462 data->last_reading = jiffies ;
1463 }; /* last_reading */
1465 if ( !data->valid ||
1466 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1467 /* Things that don't change often */
1468 dev_dbg(&client->dev, "Reading config values\n");
1470 for (i = 0; i <= 4; ++i) {
1472 lm85_read_value(client, LM85_REG_IN_MIN(i));
1474 lm85_read_value(client, LM85_REG_IN_MAX(i));
1477 if ( data->type == emc6d100 ) {
1478 for (i = 5; i <= 7; ++i) {
1480 lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1482 lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1486 for (i = 0; i <= 3; ++i) {
1488 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1491 for (i = 0; i <= 2; ++i) {
1493 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1495 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1498 data->vid = lm85_read_value(client, LM85_REG_VID);
1500 for (i = 0; i <= 2; ++i) {
1502 data->autofan[i].config =
1503 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1504 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1505 data->autofan[i].freq = val & 0x07 ;
1506 data->zone[i].range = (val >> 4) & 0x0f ;
1507 data->autofan[i].min_pwm =
1508 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1509 data->zone[i].limit =
1510 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1511 data->zone[i].critical =
1512 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1515 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1516 data->smooth[0] = i & 0x0f ;
1517 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */
1518 data->autofan[0].min_off = (i & 0x20) != 0 ;
1519 data->autofan[1].min_off = (i & 0x40) != 0 ;
1520 data->autofan[2].min_off = (i & 0x80) != 0 ;
1521 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1522 data->smooth[1] = (i>>4) & 0x0f ;
1523 data->smooth[2] = i & 0x0f ;
1525 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1526 data->zone[0].hyst = (i>>4) & 0x0f ;
1527 data->zone[1].hyst = i & 0x0f ;
1529 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1530 data->zone[2].hyst = (i>>4) & 0x0f ;
1532 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1533 data->tach_mode = lm85_read_value(client,
1534 LM85_REG_TACH_MODE );
1535 data->spinup_ctl = lm85_read_value(client,
1536 LM85_REG_SPINUP_CTL );
1537 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1538 if ( data->type == adt7463 ) {
1539 for (i = 0; i <= 2; ++i) {
1540 data->oppoint[i] = lm85_read_value(client,
1541 ADT7463_REG_OPPOINT(i) );
1543 data->tmin_ctl = lm85_read_value(client,
1544 ADT7463_REG_TMIN_CTL1 );
1545 data->therm_limit = lm85_read_value(client,
1546 ADT7463_REG_THERM_LIMIT );
1548 for (i = 0; i <= 2; ++i) {
1549 data->temp_offset[i] = lm85_read_value(client,
1550 ADM1027_REG_TEMP_OFFSET(i) );
1552 data->tach_mode = lm85_read_value(client,
1553 ADM1027_REG_CONFIG3 );
1554 data->fan_ppr = lm85_read_value(client,
1555 ADM1027_REG_FAN_PPR );
1558 data->last_config = jiffies;
1559 }; /* last_config */
1563 up(&data->update_lock);
1569 static int __init sm_lm85_init(void)
1571 return i2c_add_driver(&lm85_driver);
1574 static void __exit sm_lm85_exit(void)
1576 i2c_del_driver(&lm85_driver);
1579 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1580 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1581 * post 2.7.0 CVS changes.
1583 MODULE_LICENSE("GPL");
1584 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1585 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1587 module_init(sm_lm85_init);
1588 module_exit(sm_lm85_exit);